> ## Documentation Index
> Fetch the complete documentation index at: https://docs.ionworks.com/llms.txt
> Use this file to discover all available pages before exploring further.

# 2026 02 02

<Update label="February 2, 2026" description="API documentation, simulation study management, and input expressions">
  ## API documentation

  Studio now includes a full API Reference tab. Browse available endpoints, see request/response schemas, and try out calls directly from the documentation.

  ## Simulation study management

  A new simulation study feature lets you organize related simulation runs into studies, making it easier to compare parameter sweeps, model variants, and protocol configurations side by side.

  [Find out more →](/simulate/studies)

  ## Input expressions in protocol simulations

  The protocol simulator now supports input expressions in resolution fields, such as `10 / input["C-rate"]`. This lets you define resolution relative to operating conditions, so protocols automatically adapt when C-rate or other inputs change.

  [Find out more →](/simulate/simulating-commercial-protocols#functional-expressions)

  <AccordionGroup>
    <Accordion title="Studio">
      **Improvements**

      * Fraction and C-rate inputs are now accepted, with better failure messages and links to the relevant cell and model.
      * Pinned actions column and updated single simulation plot style.
      * Updated data management documentation.

      **Fixes**

      * Fixed voltage components plot displaying both split and unsplit data incorrectly.
      * Fixed Enter key not advancing from email to password on the login page.
    </Accordion>

    <Accordion title="Pipeline">
      **Improvements**

      * Batteries 101 guide added to technical documentation.
      * Consolidated optimization documentation for easier navigation.
      * Calculation docs now link to corresponding Python API methods.
      * Technical guide figures are now included in the documentation.
      * Replaced hardcoded polish default with a configurable option.

      **Fixes**

      * Fixed equations scrollbar overflow in documentation pages.
    </Accordion>

    <Accordion title="Python API">
      **Improvements**

      * Added a documentation site for the Python API.
    </Accordion>
  </AccordionGroup>
</Update>